C Exercises: Convert a string to a double
C Variable Type : Exercise-14 with Solution
Write a C program to convert a string to a double.
Sample Solution:
C Code:
#include<stdio.h>
#include<stdlib.h>
int main ()
{
double num1,num2;
char my_array [256];
printf ( "\n Input a number : " );
fgets (my_array, 256, stdin);
num1 = atof (my_array);
num2 = num1/2;
printf (" The original number is : %f \n", num1);
printf (" After division by 2 the number is : %f\n\n", num2);
return 0;
}
Sample Output:
Input a number : 25 The original number is : 25.000000 After division by 2 the number is : 12.500000
Flowchart:
C Programming Code Editor:
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C Programming: Tips of the Day
Static variable inside of a function in C
The scope of variable is where the variable name can be seen. Here, x is visible only inside function foo().
The lifetime of a variable is the period over which it exists. If x were defined without the keyword static, the lifetime would be from the entry into foo() to the return from foo(); so it would be re-initialized to 5 on every call.
The keyword static acts to extend the lifetime of a variable to the lifetime of the programme; e.g. initialization occurs once and once only and then the variable retains its value - whatever it has come to be - over all future calls to foo().
Ref : https://bit.ly/3fOq7XP
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